A common misunderstanding is treating incremental materialized views as if they have knowledge of the full source table. They do not. An incremental MV is triggered only by new inserts and operates exclusively on the newly inserted block of data. It has no visibility into merges, partition drops, or mutations on the source table. This means that if you alter the source table's data through mutations or partition operations, the materialized view's target table will not be updated to reflect those changes — there is no automatic synchronization. Users must manage this explicitly, either by rebuilding the MV's target table or by using refreshable materialized views for use cases where full-table recomputation is acceptable.
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SQLite does the same autocommit, but uses fdatasync(2) on Linux, which skips syncing file metadata when compiled with HAVE_FDATASYNC (the default). This is roughly 1.6 to 2.7 times cheaper on NVMe SSDs. SQLite’s per-statement overhead is also minimal: no schema reload, no AST clone, no VDBE recompile. The Rust reimplementation does all three on every call.。关于这个话题,新收录的资料提供了深入分析
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Notice how we're using an Email type over a String? This means we've limited the use of our method and are forcing the calling code to create the Email type.